For every drink you order, have a water with it, Susan suggested. "Don't allow yourself to order another drink until your water is gone." The water will fill you up, and drinking them together will make the alcohol last longer. So instead of pounding down four drinks, you may only have two. You'll not only save calories from drinking less alcohol, but we know that drinking a little too much can make us more likely to order (and eat!) foods we wouldn't normally, so you'll save calories there as well.